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authorStefano Stabellini <stefano.stabellini@eu.citrix.com>2013-11-11 12:50:30 +0000
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2013-11-11 12:48:58 -0500
commit18c51e1a3fabb455ff1f5cd610097d89f577b8f7 (patch)
tree5489d46bea7ecd8fc8713d8c59cde17372d96068 /include/xen
parentffc555be09bd2603abdbc6f8b64c6a7477facc48 (diff)
xen/arm: pfn_to_mfn and mfn_to_pfn return the argument if nothing is in the p2m
Some common Xen drivers, like balloon.c, call pfn_to_mfn and mfn_to_pfn even for autotranslate guests, expecting the argument back. The following commit broke these drivers by changing the behavior of pfn_to_mfn and mfn_to_pfn: commit 4a19138c6505e224d9f4cc2fe9ada9188d7100ea Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Date: Thu Oct 17 16:22:27 2013 +0000 arm/xen,arm64/xen: introduce p2m They now return INVALID_P2M_ENTRY if Linux doesn't actually know what is the mfn backing a pfn or what is the pfn corresponding to an mfn. Fix the regression by switching to the old behavior. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: Ian Campbell <ian.campbell@citrix.com> Tested-by: Ian Campbell <ian.campbell@citrix.com>
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